Question

what are the two principles of prevention of disease ? according to the ncert book ( science) 9th ​

Answer 1

Answer:

General Ways

General WaysThere should be limited exposure to airborne microbes by providing not so crowded living conditions. Safe drinking water should be provided to prevent water-borne diseases. Provide a clean environment which prevents the breeding of mosquitoes. This prevents the spread of vector-borne diseases.

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